The world is celebrating the annual Earth Day today to promote global awareness about environmental protection and conservation. Google too dedicated a doodle on the occasion addressing one of the most pressing topics of the time: Climate change.
The Sun on Wednesday unleashed a massive solar flare that has the potential to impact satellite communications and global positioning systems, the Centre of Excellence in Space Sciences India (CESSI) said.
The first audio recordings on Mars reveal a quiet planet with occasional gusts of wind where two different speeds of sound would have a strange delayed effect on hearing, scientists said Friday. The study confirmed for the first time that the speed of sound is slower on Mars, travelling at 240 metres per second, compared to Earth's 340 metres per second.